﻿<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <style type="text/css">
        #span1
        {
            width:100px;
            height:40px;
            border:1px solid red;
        }
        #span2
        {
            width:100px;
            height:80px;
            border:1px solid blue;
        }
    </style>
</head>
<body>
    <span id="span1">绿叶学习网</span>
    <span id="span2">绿叶学习网</span>
</body>
</html>
